As far as I can remember, Pulp Fiction doesn't have any explicit mention of fries with mayonnaise. However, given the movie's detailed and immersive nature, it could be that there are background details or off - hand references that might include such a food combination. But without a very thorough analysis or re - watching, it's hard to say for certain.
I recommend the book "Possibly a Fake Silver Soul". It tells the story of Jiang Cheng, a transmigrator, who met the owner of Xinghai District and his girlfriend, Jiang Hua, who were traveling in the universe in the dragon vein of a certain planet. Later, he came to Earth and met his teacher, Yoshida Shoyo, who had influenced his life. He also met a group of friends. This included the transmigrator Okita Soki. This is a Silver Soul Doujinshi novel, don't miss it. I hope you like this fairy's recommendation. Muah ~😗
Yes, there are quite a few. You can start by looking on popular fanfiction websites like Archive of Our Own. Just search for 'Gintoki x Hijikata married' and you'll find a variety of stories. Some might focus on their daily married life, full of comical situations considering their different personalities. Others could be more about how they support each other through difficult times.
Gintama is purely fictional. It's filled with imaginative characters and scenarios that are not rooted in real-life events. The creators crafted a unique and entertaining fictional world for the audience.